Extensible shore



H. O. MCMILLAN EXTENSIBLE SHORE May 2, 1933.

Original Filed Oct. 18. 1926 2 Sheets-Sheet 1 M y 2, 1933- H. o.McMILLAN EXTENSIBLE SHORE 2 Sheets-Sheet 2 Original Filed Oct. 18 1926 l1 I-4 I Patented May 2, 1933 HOWARD O. MCMILLAN, F MINNEAPOLIS,MINNESOTA EXTENSIBLE SHORE his invention relates to a shore such ascommonly used for supporting timbers 111 building construction. Theheight at which said timbers are supported varies on'different buildingjobs and it is desirable to have a shore which may be extended oradjusted to suit the timbers to be supported. It is also desirable tohave means for securely holding the shore in extended position and formoving the supporting part thereof upward into firm supporting position.It is also desirable in a shore to have the relatively'movable partscentered in respect to each other or disposed symmetrically abouta'central axis.

5 It is also necessary from a commercial stand- 7 said parts and forholding thesame firmly in adjusted position.

t is a further object .of the invention to provide a shore comprisingspaced parallel members securely held in position by suitable spacingmeans, together with a standard centrally movable between said members.said members having supporting means at their lower ends embracing saidstandard, and means passing through said last mentioned I means andstandard for relatively moving the same and said standard and holdingthe same in fixed position.

It is another object of the invention to provide such a shore as setforth in the preceding paragraph, in which the means support ing saidparallel members has a plurality of elongated slots extendingtherethrough and spaced longitudinally thereof, and in which saidstandard has a plurality of elongated slots extending therethrough andspaced 1ongitudinally thereof a different distance than the slots insaid means, together with wedge members adapted to extend through theslots in said means and standard relatively Application filed. October18, 1926, Serial No. 142,212. Renewed June 8, 1931.

adjusting the same and holding the same adjusted position. 7

It is still another ob ect of the inventlon to PIOVlClS an extensibleshore having a pa r of spaced parallel members with novel and eflicientspacing means holding them in proper relation, together with a standardmovable between said parallel members and guided by said spacing means.

These and other objects and advantages of the invention will be fullyset forth in the following description in connection with theaccompanying drawings, in which like reference characters refer tosimilar parts throughout the several views and in which Fig. 1 is a viewin front elevation of the device; i

Fig. 2 is a view in side elevation thereof;

Fig. 3 is a horizontal section taken on line 3-3 of Fig. 1, as indicatedby the arrows;

Fig.- 4 is a horizontal section taken on line l of Fig. 1, as indicatedby the arrows;

Fig. 5 is a horizontal section taken online 55 of Fig. 1, as indicatedby the arrows, Figs. 4 and 5 being shown on an enlarged scale;

Fig. 6 is a partial view similarto Fig. 1;

Fig. 7 is a partial view similar to Fig. 2;

Fig. 8 is a horizontal section taken on line 8-8 of Fig. 6, Figs. 6 to 8also being shown on an enlarged scale; and

Fig. 9 is a view modification.

Fig. 10 is a horizontal section taken on line 1010 of Fig. 6.

Referring to the drawings, an extensible shore is shown comprising astandard 10 similar to Fig. 4;, showing a forms, in the embodiment ofthe invention illustrated it is shown as made from a standv and whilethis standard may be of various 7 to receive nails or other securingmeans holding the shore in place. The central member of standard hasextending therethrough a plurality of elongated spaced slots 10a. Themovable part of the shore comprises a pair 'of spaced parallel members13 and while these members may be variously formed, in the embodiment ofthe invention illustrated they are shown as made of rectangular timberssuch as the common 2 x 4 timbers used in building construction. Themembers 13 are provided with suitable spacing means or separators 14.While various forms of separators may be used, the one illustrated,which has been found to be very eflicient in practice, comprisesrectangular plates 14a extending across the ends of the members 13 andbeing provided with holes through which pass means securing the same tothe members 13, such as nails 15. As shown in Fig. 1, the nails 15 andthe holes therefor are disposed on lines extending at an angle to thesides of the plates 14a and the holes in the plates 14a at oppositesides of the same member 13 are disposed on lines intersecting eachother or extending in opposite directions. The plates 14a have securedthereto as-by riveting, the plate 14?) having a central portion inContact with one of the plates 14a and secured thereto and having sideportions extending along the sides of the member 13 as well as endportions bent at right angles to the side portions and extending in contact with the other plate 14a to which they are also secured. The plates146 have spaced tongues 140 struck up therefrom which are spaced adistance slightly greater than the thilckness of the cross member of thestandar 10.

vided with a plurality of holes 16a adapted to receive nails or spikeswhichwill be driven into the timbers supported by the shore. As ,shownin Fig. 3, the holes 16a are arranged along lines extending at an angletothe sides of the memberlfl. A block 18 is also disposed betweenmembers 13. immediately ,below the member 16 and secured to all of saidmembers. The members 13 are support-- 'ed and connected at their bottomsby a member 19 which preferably is made as a casting and has ahorizontal flange extending beneath members 13 and vertical flangesextending at each side thereof,'said horizontal flange having apertures19a therethrough adapted to receive nails or other suitable fasteningmeans 20 extending therethrough and into the bottoms of the members 13.The

horizontal flange also has a T-shaped opening therethrough through whichpasses T-bar 10. The vertical flanges are apertured to receive theheaded and nutted bolts 21 extending therethrough and through the lowerends of member 13, washers 22 being disposed under the heads of saidbolts. The member 19 has portions extending longitudinally at each sideof the central member of the standard 10 connected by a sleeve 19?) attheir lower ends entirely surrounding member 10. Said portions haveelongated slots 19c ext-ending therethrough, which slots are spaced a.different distance apart than the slots in the standard 10 and while theslots 190 may be spaced various distances, they are shown as spacedsubstantially three times the distance apart as arethe slots 10a inmember 10. WV-edges 23 are provided shown as rightangular in form and ofuniform thickness, which wedges have their larger ends considerablywider than the length of the slots 10a and 190 and are adapted to extendthrough said slots as shown in Figs. 1 and 6. The wedges 23 have holesin one corner for the attachment of flexible members such as the chains24 secured at their other ends through apertures in the, washers 22which have a portion bent outwardly for this purpose. The member 19 alsohas lugs 19d projecting at one side thereof in alinement with the slots190, which lugs are threaded to receive set screws 25 adapted to engagethe wedges 23 when disposed in said slots. The set screws 25 have holes25a extending through the heads thereof, so that an ordinary wire nailcan be placed therethrough and used as a wrench to tighten said set Iscrews. The members 13 are surmounted by a top In Fig. 9 a modified formof spacer or separator 26 for the members 13 isrshown. The separatorcomprises rectangular plates 26a extending across the ends of members 13and having apertures therein to receive the fastening means 15 asalready described in connection with spacers 14. A plate 26?) has acentral portion riveted or otherwise secured to one of the plates 26a,which is the one adjacent the central member of standard 10. The plate266 has side portions extending at right angles to said central portion,which side portions extend along the sides of the members 13 and arebent towards each other substantially at right angles at their endportions and secured to the plate 26a in any suitable manner, as by therivets shown. Tongues 260 are struck up from the side portions of plate26?) and spaced apart a distance slightly greater than the thickness ofthe'cross member of the stand ard 10, so that said cross member may beremoved and be guided therebetween as shown in Fig. 9. The plate 26balsohas tongues 26d struck up from its central portion spaced a distanceslightly greater than the thickness of the central member. of thestandard 10, which member is adapted to be disposed between and guidedby .said tongues 26d.

In operation the wedges 23 are removed, the base 11 placed in thedesired position, and the movable sectioncomprising members 13, raiseduntil it is in contact with the timbers to be supported. At this timeone of the slots 190 will be partially alined with one of the slots a instandard 10. One of the wedges 23 is then inserted through the slots 19cand 10a and driven transversely therethrough. This moves the members 13and the parts carried thereby further upward, thus firmly positioningmember 16 in contact with the .supported timbers. The wedge is of suchtaper that when the standard and movable section have been positioned asdesired, the wedge will be held in position by friction. The wedge maybe additionally locked in position by tightening the set screw inalinement therewith. The set screws 25 may be tightened by merelyplacing through the heads thereof an ordinary wire nail of which asupply will be on hand in any building operation. No wrench or specialtool is thus required. If it is ever desired to extend or raise theshore under load, this may readily be done by driving in the first wedgeuntil the slots 19c and 100, through which it passes, are substantiallyalined. At this time the other slot 190 will be in partial alinementwith another slot 10a and the ther wedge may be inserted through theseslots and driven into place. Then these latter slots are brought'intoalinement, the first slot 190 will again be in partialalinement withanother slot 10a and the other wedge may then be inserted and driveninto place. The movable section can thus be progressive- 'ly andsuccessively raised on the standard 10 as desired. The chains 24 areprovided so that the wedges will always be on hand with the device andnot become lost during transportation. The standard 10 moves between themembers 13 and is guided in the spacing members 14. The transversemember of the standard moves between the tongues 14c and is guidedthereby. If the spacer shown in Fig. 9 is used, both the central andtranverse members of the standard are guided, the central member movingbe tween and being guided by tongues 26d. It

" will be noted that there are no horizontal plates extending betweenthe members 13 on which concrete might collect. The spacing members 1 1have their edges disposed upward so that the plates are in verticalplanes and any concrete will drop past the separators and not accumulatethereon. The nails 15 at the opposite sides of the members 13 beingdisposed on lines extending at an angle to each other, add strength tothe device and this arrangement tends to prevent twisting. Theseparators 14 are very stiff and rugged in construction and hold themembers 13 securely in properly spaced relation.

The straps 17 are provided so that when the shore is taken down, themember 16 will not be pulled off of the members 13 by the fasteningmeans extending through the holes 16a. The member 16 is, of course,tightly nailed to the members supported thereby and must be pulled loosetherefrom.

It will be noted that the shore is quite symmetrical, the central planepassing through the central member of standard 10 also being the centralplane between the members 13. The central axis of slots 10a also lies inthe plane extending centrally and transversely of the meml ers 13. Theload is carried on the wedges 23 and is thus carried centrally of thedevice so that there is no eccentric or twisting action on the shore dueto the load.

From the above description it is seen that applicant has provided a Verysimple, eracient, durable and inexpensive shore, and one which can beproperly extended for use and if desired, adjusted under load. Thepartsof the device are quite few, the device is-easily and quickly operatedand no special tools are necessary in the operation thereof. The shorehas been amply demonstrated in actual practice and found to be verysuccessful'and is being commercially made and marketed.

il hat is claimed is 1. An extensible shore having in combination, amovable section comp-rising spaced parallel bars and a member supportingand connecting said bars at their lower ends, hava portion extendingbelow said bars with spaced sides, said sides having extending'therethrough longitudinally spaced alined elongated slots, a standardmovable between said bars having a portion extending between said sides,said portion having a plurality of longitudinally spaced elongatedalined slots extending therethrough, differently spaced from theslots insaid sides, a base on said standard, and a member adapted to passthrough slots in said sides and standard relatively to move said sectionand standardand hold the same in adjusted position. I

2. An extensible shore having in combination, a movable sectioncomprising spaced 1 parallel bars, a standard for supporting saidsection and movable between said bars, said bars being disposedsymmetrically about the central axis of said standard, a member securedto and supporting said bars having portions at each side of saidstandard with a plurality of alined elongated slots spacedlongitudinally thereof and extending therethrough, said standard havinga plurality of spaced elongated alined slots extending therethrough,differently spaced from the slots in said portions. a vertical planepassing centrally and longitudinally through 1sgaid slots passingcentrally through said ars. I

3. An adjustable shore having in combination, a movable membercomprising spaced parallel bars having adjacent flat inner sides, rigidspacing and bracing members extending across opposite sides of said barsand ,secured thereto, said members having portions extending betweensaid bars parallel to and substantially in contact with said inner sidesand carrying inwardl ext-ending portions forming guide means fiir saidstandard, said standard being of T-shape in cross section, said lastmentioned portions being disposed at either side of the ends of thecross member of said T.

4. An adjustable shore having in combination, a movable sectioncomprising spaced parallel bars, rectangular in cross section, astandard movable between said bars and of T-shape in cross section, arigid spacing and bracing member for said bars having oppositeplate-like sides extending across and secured to the opposite sides ofsaid bars and having plate-like portions extending between said bars,said latter portions having projections disposed at the sides of theends of the cross member of said T shaped standard forming guide meanstherefor. I 5. An extensible shore having in combination, a movablesection comprising spaced parallel bars and a member supporting andconnecting said bars at their lower ends having a portion extendingbelow said members with spaced sides, a standard movable between s'aidsides and said bars and symmetrically disposed about an axis extendingcentrally and longitudinally between said bars and means passing throughsaid sides and said standard for relatively moving the same and forholding said section and standard in adjusted position.

6. An extensible shore having in combination, a movable sectioncomprising spaced parallel bars and a member supporting and connectingsaid bars at their lower ends having a horizontal flange and verticalflanges extending therefrom at each side of each of said bars, meanssecuring said bars to said flanges, said member having spaced sidesextending below said horizontal flange, a standard having a base at itslower end and movable between said bars through said horizontal flangeand between said sides and means passing through said sides and standardadapted to hold said section and standard in adjusted position, andmovable transversely thereof relatively to move said section andstandard.

7. An extensible shore having in combination, a standard having a baseportion, a member guided for movement longitudinally of said standardand having portions extending above and at either side thereof adaptedto support the load centrally of said standard, spaced slots extendingthrough said member and standard, and spaced respectively differentdistances therein, and members passing through the slots in saidstandard and member for relatively moving the same, and holding the samein adjusted position.

8. An extensible shore having in combination, a member including spacedparallel portions, means for holding said portions in properly spacedrelation, a member guided between said portions for movementlongitudinally of said first mentioned member, spaced alined slotsextending through one of said members, a slot extending through theother of said members, and means passing through said slots in bothmembersand engaging the other of said members relatively to move saidother member and hold the same in adjusted position.

9. An extensible shore'having in combination, a movable sectioncomprising spaced parallel bars, a member supporting and connecting saidbars at their lower ends, said member extending below said bars andhaving spaced portions, said member having extending through saidportions longitudinally spaced alined elongated slots, a standard membermovable between said bars and extending between said portions, saidstandard member having a plurality of longitudinally spaced elongatedslots extending therethrough, and slots in one of said members beingspaced a distance less than half the distance the slots in the othermember are spaced and the slots in both members being of substantiallythe same length, and wedge members adapted to be passed through theslots in both members for relatively moving said members, whereby acontinuous step-bystep relative movement of said members may be had. j

10. The structure set forth in claim 1, and means engaging said lastmentioned member to prevent movement thereof relatively to said firstmentioned member.

11. An extensible shore having in combination, a movable sectioncomprising spaced parallel bars, a member supporting and connecting saidbars at their lower ends, having a portion extending below said bars anddisposed centrally thereof, said portion having spaced sides and saidmember having an opening alined with the space between said sides andsubstant ally of T-shape in plan, a T-shapedstandard extending betweensaid sides through said opening and upward between said bars, said sideshaving spaced elongated slots therethrough respectively alined therein,said standard having spaced elongated slots therethrough adapted toaline transversely with the slots in said sides, the slots in one ofsaid parts being spaced less than half the distance ofthe slots in theother, and wedges adapted to be driven through said slots in said sidesand standportion having a vertical slot extending therethrough, a metalstandard adapted to extend through said slot having a web, the centralplane of which substantially coincides with said planes, said dependingportion and said web having a plurality of longitudinally spaced slotsextending therethrough, said slots being spaced difiierently in saidmembers, the longitudinal center lines of said slots being disposedsubstantially in the vertical plane extending transversely and centrallyof said timbers.

13. In combination with an adjustable shore, comprising spaced parallelbars, having adjacent fiat inner sides, and a standard of T-shape incross section movable between said bars, a spacing and bracing membercomprising plates rigidly secured to and extending between the outersides of said bars which are at right angles to said inner sides, andplates rigidly connected to said plates and extending along said flatinner sides, said lateral plates having spaced parallel portionsextending toward each other on said respective plates and in transversealinement, all of said plates being disposed in vertical planes, saidprojecting portions forming guides for the sides of said standard.

14. In combination with an adjustable shore, comprising a movable memberhaving spaced parallel timbers rectangular in cross section with theirlong sides adjacent, and a standard having oppositely projecting flangesmovable between said timbers, a rigid spacing and bracing member havingplates secured to and extending between the shorter sides respectivelyof said timbers, and connected by plates extending along the adjacentsides of said timbers, said lateral plates having spaced parallelportions struck up therefrom and in transverse alinement on therespective plates forming guides for the flanges of said standard, allotsaid plates being disposed in vertical planes.

15. In combination with an adjustable shore, comprising a movable memberformed of spaced parallel timbers rectangular in cross section, and astandard of T-shape in cross section movable between said timbers, arigid spacing and bracing member having spaced parallel plates securedto the shorter sides of said timbers and extending respectivelytherebetween, a plate bent into substantially rectangular shape andsecured to said last mentioned plates and extending flat along theadjacent sides of said timbers, said latter plate having inwardlyprojecting portions at opposite sidesforming guides for the sides ofsaidstandard, all of said plates being disposed in vertical planes.

16. An extensible shore having in combi nation a movable sectioncomprising spaced parallel bars and a member supporting and connectingsaid bars at their lower ends'having aportion extending centrally belowsaid members with spaced sides,-a standard hav ing a portion movablebetween said sides and said bars, said sides and portion of saidstandard having elongated slots therethrough dif fer'ently spaced insaid sides and portion of said standard and arranged to aline, awedgeadapted to pass through said slots and relatively move said sideslongitudinally, and means for locking said Wedge in position.

17. An adjustable shore having in combination, a movable sectioncomprising spaced parallel bars, a member supporting and connecting saidbars at their lower ends, said member extending below said bars, asupport ing standard extending between said bars andv passing throughsaid member, and a wedge: movable transversely of said member and actingin cooperation with said standard to hold said member and bars inposition.

. 18. An adjustable shore having in combination, a movable sectioncomprising spaced parallel. bars and a member supporting and connectingsaid bars at their lower ends, a supporting standard having a bas-eportion at its lower end and extending upwardly between said bars, saidmember having trans- Vversely extending openings therein, and a wedgemovable transversely through said openings for holding said member andbars in fixed position with said standard acting as a support. 7

19. An adjustable shore having in combination, a movable membercomprising spaced parallel timbers, a rigid member on which the lowerends of the timbers rest having flanges extending along the sides ofsaid timbers and secured thereto, said member having a portion disposedbelow said lower ends substantially centrally of said bars and having anopening extending transversely therethrough, a supporting standardextending upwardly through said member and between said bars, and awedge adapted to be driven through said opening to hold said bars andmember in position with said standard acting as a support. I

20. An adjustable shore having in combination, a pair of spaced parallelbars, means connecting said bars at their tops and adapted to carry theload, a standard forming a support for said shore having a base portionand extending upwardly between said bars, a. member supporting said barsat their lower ends and embracing said standard, said standard having aseries of transverse slots therethrough for determining the position ofsaid member, and wedge means cooperating with said member to hold saidmember in fixed position relatively to said standard.

21. An adjustable shore having in, combination, a pair of spacedparallel bars, a standard of T-shape in horizontal cross section andhaving a base portion, said standard extending upwardly between saidbars, a mem- 19 bersupporting the lower ends of said bars extendingabout said standard and slidable thereon, said member having atransverse opening therethrough below said bars, said standard having aseries of slots in the stem portion of said T for determining theposition of saidmember, and means cooperating with said slots andincluding a wedge adapted to be driven through said opening in saidmember to hold said bars and member in position with said standardacting as a support.

22. An adjustable shore having in combination, a pair of spaced paralleltimbers rectangular in horizontal cross section, a standard having abase portion and an upstanding portion of T-shape in horizontal crosssection,

said standard extending between said timbers, a member connecting andsupporting the lower ends of said timbers and having an openingtherethrough through which said standard extends, said standard having aseries of transverse openings in the stem-portion of said T, said memberhaving a transverse opening therethrough and a wedge passing throughsaid opening and cooperating 5 with said openings in said standard tohold said timbers and member in position with said standard acting as asupport.

23. An adjustable shore having in combination, a movable sectioncomprising spaced 4!) parallel bars, a member supporting and connectingsaid bars adjacent their lower ends, a standard having a base at itslower end and extending upwardly between said bars and through saidmember, and means extending transversely through said member andcooperating with said standard to hold said member and bars in fixedposition relatively to said standard.

In testimony whereof I afiix my signature.

as HOWARD O. MoMILLAN.

